Pith Number

pith:WU3DDA7C

pith:2009:WU3DDA7CASPWL3RWLVTOX4BH2A

not attested not anchored not stored refs pending

Experimental Study of the HUM Control Operator for Linear Waves

Gilles Lebeau, Maelle Nodet

arxiv:0904.3509 v1 · 2009-04-22 · math.OC · cs.NA · math.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WU3DDA7CASPWL3RWLVTOX4BH2A}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-03T23:06:25.722918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5363183e2049f65ee365d66ebf027d022d15605fa0e08de2dcabda468459fd3

Aliases

arxiv: 0904.3509 · arxiv_version: 0904.3509v1 · doi: 10.48550/arxiv.0904.3509 · pith_short_12: WU3DDA7CASPW · pith_short_16: WU3DDA7CASPWL3RW · pith_short_8: WU3DDA7C

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/WU3DDA7CASPWL3RWLVTOX4BH2A \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b5363183e2049f65ee365d66ebf027d022d15605fa0e08de2dcabda468459fd3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a30fb48ce42a264450651cbad66eab4b820ef155c149384c65e45c9860b9171",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-04-22T17:25:58Z",
    "title_canon_sha256": "e78475220cf23a501ea5488b60cb9717d22b9f258008f6c8e3855268d307ee5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3509",
    "kind": "arxiv",
    "version": 1
  }
}